Tellurian



W. H. SHERA.

TELLURIAN.

Patented Feb. 10,1891.

(No Model.) 3 Sheets-Sheet. a.

W. H. SHERA. TELLURIAN.

No. 446,022. Patented Feb. 10, 1891.

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UNITED STATES PATENT Orricrz.

\VILLIAM H. SIIERA, OF COLLEGE CORNER, OHIO.

TELLURIAN.

SPECIFICATION forming part of Letters Patent No. 446,022, dated February 10, 1891.

Application filed June 19, 1889.

To all whom zit may concern:

Be it known that I, \VILLIAM II. SHERA, a citizen of the United States, residing at College Oorner,in the county of Butler and State of Ohio, have invented certain new and useful Improvements in Tellurians; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. 1

This invention relates to astronomical apparatus; and it consists in certain improvements in the construction of such apparatus, as hereinafter described and claimed, the de vice, as herein described, being intended to show the movements of the sun and the earth and the moon.

In the accompanying drawings, Figure 1 is a perspective View of an apparatus embody- Fig. 2 is a vertical central section of the same taken on line 13 06 of Fig. 1. Fig. is a detail view. Fig. 4 represents a plan View of the grooved bed-plate.

A designates a bed which is provided with a sunken annular track A, in which are made three endless grooves B B 13 the said track being elliptical in form and the said grooves extending along the same and intersecting one another at certain points, as seen at aa' a o the.

011 the bed A, at the center, is a fixed vertical shaft b, on which is loosely placed a gear-wheel C. To the said wheel 0 is fixed a tubular shaft 0, which extends upward, inclosing the shaft Z), and to the upper end of said tubular shaft is secured a chain-wheel d.

D indicates a platform, which is fixed to the top of shaftb and carries a short rotative vertical shaft 6, to the lower end of which is fixed a chain-wheel E, which is connected by a chain or belt with the wheel (1. To the shaft 6 is fixed a shorthorizontal arm f, which carries a standard g, on which is placed a ball G, which is intended to represent the sun and moves on a small circle.

F indicates a frame, which is pivotally connected at its inner end with the central shaft and extends outward, as shown. This frame Serial No. 314,809. (No model.)

carries certain devices and mechanism for illustrating the movements of the earth and moon, and said frame is moved about the central shaft by the rotation of the gearavheel O, a pin 7t fixed on said wheelbeing in position to connect with said frame. A vertical shaft '5, which is carried by the frame F, has a pinion 7tfast on its lower end, in position to engage with the teeth m of the bed A. Two gear-wheels m and m are fast on the said shaft 1', for purposes as hereinafter stated.

I indicates a vertical shaft which carries a cage wheel or pinion R, which is in an inclined position, a ball II, representing the earth, being secured to said pinion and placed on an inclined rod .2, extending from shaft I and representing the earths axis.

A circular disk J is placed on the lower end of the shaft 1, the said disk being in the sunken annular track A, in which it moves during operation. The disk J is provided with three projections or pins 0 0 0 on its lower surface, which extend into and move in the grooves B B 13 during operation.

A hollow shaft K incloses the shaft 1 .and

has on its upper end a hollow beveled gearwheel L, having inner teeth which engage the pinion 12. On the lower end of the shaft K is a pinion p, which is in position to be engaged by the gear-wheel m on the shaft 2', whereby the shaft K may be rotated, and through wheel L engaging pinion n will produce the rotary movement of the ball I-I, thus showing the revolution of the earth on its axis.

M indicates a gear-wheel, which is loose on the shaft K and is in position to be engaged by the gear-wheel m on the shaft 1).

On wheel M is mounted a horizontal bar 0, which extends outward and carries a stem or standard g, which carries a ball N, which represents the moon, the movement of the ball N around the ball II being produced by the rotation of the wheel M.

P indicates a shaft, provided with a crank r, and on said shaft is mounted a gear-wheel s, which is in position to engage the wheel 0,

by the rotation of which motion is imparted through chain-wheels E and cl to the shaft which carries the arm f, which carries the standard of the ball G, the latter being thus moved on a small circle. As before stated,

the wheel 0, by pin 72, connects with the frame F, giving the latter a rotary movement. The gear-wheel 7ton the shaft 1', engaging with the teeth m on the bed A, produces the rotation of gear-wheels m and m both being on said shaft 11. The wheel m engaging with wheel 13 on the lower end of the hollow shaft- K, effects the rotation of the wheel L on the upper end of said shaft, and the wheel L, engaging the wheel 11, produces the rotary movement of the ball II representing the earth.

The movement of the ball N, representing the moon, around the ball H is effected by the wheel on engaging wheel M, on which is mounted the bar 0, which carries the standard to which the ball N is secured.

The ball H representing the earth is held in position with its axis inclined to the north, and is kept in such position during its movement around the sun by the action of the disk J. As the frame F is moved around by the wheel 0, the disk J is moved along in the endless track A, the pins extending and moving in the grooves B B B In Fig. 4 the disk J is shown at the northern point of the elliptical track, the rod .2 on shaft I, representing the earths axis, being shown inclined to the north. The position of said disk is shown in dotted lines at different points on the track, the position of the axis 2 being indicated and also the pins 0 0 0 in the grooves. As will be seen, when the disk J has been moved in the direction of the arrows about half-way from the northern to the southern point, the pin 0, which was in the outermost groove, has passed to the innermost groove, and the southern pin 0 which was in the innermost groove, passes to the outermost groove, in which it continues to move on through the southern point. WVhen the disk has passed the southern point and has moved about half-way from thence to the northern point, the pin 0 has passed to the outermost and the pin 0 passes to the innermost groove, and the disk moves onto the northern point, with said pins in the same relative position.

At all times during the. movement of the disk around the track the rod ,2, representingthe earths axis, is held in the same position, inclining to the north, as shown in Fig. 4,

I claim 1. The combination, with a bed-plate provided with teeth m, a sunken track A, and a series of endless grooves which are not parallel, of a central fixed shaft, a wheel 0, provided with projection It, a frame F, connected with said central shaft, and the following mechanism which is carried by said frame: a vertical shaft t, with gear-wheels m and 7a, a hollow shaft K, with gears L and p, a shaft within shaft K, with a gear-wheel 47., carried in an inclined position at its upper end, and a circular disk .I', secured to its lower end, said disk being provided with projections 0 o 0 substantially as described, for the purposes set forth.

2. The combination, with a bed-plate provided with a series of endless grooves which are not parallel but made to cross one another at different points, of a disk carrying a globe and provided with projections which extend into said endless grooves, and mechanism to impart to said disk a movement along the said grooves, substantially as and for the purposes described.

3. The combination, with the bed-plate A, provided with an endless track A and endless grooves B B B of a disk J, with projections 0 0 0 sliding in said grooves, said disk being provided with a vertical shaft, which carries a gear-wheel n in an inclined position,

' a hollow shaft K, which ineloses said vertical shaft, said shaft K being provided with a wheel L, which is in position to engage with the gear-wheel 11, substantially as and for the purposes described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. SIIERA. \Vitnesses:

GEORGE WEIDNER, WM. H. H. PIERSON. 

